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Table 2 Descriptive statistics for the three datasets

From: Broad external validation of a multivariable risk prediction model for gastrointestinal malignancy in iron deficiency anaemia

Dataset

Dorset

Oxford

Sheffield

Dataset size

N

2390

1117

474

GI cancer

Positive—n (%)

200 (8.4%)

86 (7.7%)

36 (7.6%)

Sex

Male—n (%)

862 (36%)

446 (40%)

227 (48%)

Age (years)

Median (min, max)

71 (16, 96)

74 (22, 97)

69 (18, 93)

Hb (g/l)

Median (min, max)

104 (32, 159)

91 (29, 129)

104 (54, 152)

MCV (fl)

Median (min, max)

80 (53, 112)

81 (55, 125)

80 (32, 104)